Lesson 9 of 25
The Ladder of Logical Progression (Step-by-Step Thinking)
Start with the honest part: adding the phrase "think step by step" to a prompt does very little on current models, because they already reason before answering. What still works, and works well, is you deciding the stages - naming the parts of the task, their order, and what each must produce. That is not a trick to make the model think harder; it is a structure that makes its reasoning checkable by you and lets you reject one stage without throwing away the rest.
The numbered-stage structure in the original is sound and needs no change. Two things are worth adding: make one stage a grounded research stage, with sources and dates, since in business and planning problems that stage is usually what decides the answer; and send the staged output where it will be worked on - a Sheet with a tab per phase and a column for dependencies is a working document, where the same content in a chat is a wall of text.
- Make one stage grounded research, with dates and sources.
- Ask for formulas in a Sheet, not typed-out results.
- One tab per phase, plus a dependencies column.
- Doc for an analysis others will comment on.
- Keep caveats in chat, out of the deliverable.
Instead of
A train leaves Hyderabad at 3 PM traveling at 60 km/h. A car leaves Hyderabad at 3:30 PM on the same route traveling at 80 km/h. At what time will the car overtake the train?
Perplexity version
Solve this word problem and show the working in a form I can check. Problem: A train leaves Hyderabad at 3 PM travelling at 60 km/h. A car leaves Hyderabad at 3:30 PM on the same route travelling at 80 km/h. At what time will the car overtake the train? Structure the answer this way: 1. **Setup** - what is known, what is asked, and anything ambiguous in the problem. 2. **Working** - a table with columns Quantity, Value, Unit, How derived. Rows for head start distance, relative speed, time to close the gap, overtake time. 3. **Answer** - one line. 4. **Independent check** - compute each vehicle's distance travelled at that time, working forward from its own departure, and confirm they match. Do not reuse the relative-speed figure; that checks the arithmetic against itself. 5. **Assumptions** - constant speeds, no stops, identical route. Then, because this is a teaching example and not just a sum: * Generate the same problem with five different sets of numbers, and put all six versions into a Google Sheet called "Overtake problems" with columns Problem, Head start, Relative speed, Answer, and a Working column. Make the Answer column a formula wherever the arithmetic allows it, so the Sheet itself checks the answers rather than me trusting the text. * Then tell me which step students most commonly get wrong, and what the wrong answer looks like. I have not asked you to "think step by step" - that phrase does nothing for you now. The structure above is the actual instruction.
Instead of
Is opening a second branch of my restaurant in Begumpet a good idea?
Perplexity version
Act as a business consultant. I run a successful biryani house in Kondapur, Hyderabad, and I am considering a second branch in Begumpet. Structure this in stages, and ground the market stage in real data rather than impressions. **Stage 1 - What you need from me.** Revenue and margin, how much of Kondapur's success rests on my own presence, kitchen capacity, staff depth, capital available. Ask; do not assume. If the gaps make the later stages guesswork, say so. **Stage 2 - Grounded market research, cited, with dates.** Use Google Search for: commercial rental ranges for restaurant space in Begumpet against Kondapur; which biryani and multi-cuisine restaurants currently operate in Begumpet and how they are rated; the residential and office mix and any recent development or metro connectivity that changes footfall; what has been reported about restaurant failure rates and second-outlet expansion in Indian metros. Show the sources and dates - this stage is why you are doing this here rather than elsewhere. **Stage 3 - The case for.** At least three benefits specific to Begumpet and to biryani. **Stage 4 - The case against.** At least three risks, including the ones owners underestimate: attention splitting, quality drift in a second kitchen, cannibalisation, lease carry before breakeven. **Stage 5 - Recommendation.** A position, not a shrug. Then the single most important thing to establish before deciding, and how to establish it in thirty days. Put stages 2 to 5 into a Google Doc called "Begumpet branch - analysis" so I can share it with my partner and he can comment in the margins. Keep stage 1's questions in the chat where I will answer them. Mark clearly which claims rest on my facts, which on cited sources, and which on your assumptions.
Instead of
Give me a plan to launch a podcast.
Perplexity version
I want to launch a podcast about the history of Indian startups, starting from nothing. Build the plan as three phases with a decision gate between each - the one question that must be answered before the next phase starts. A flat checklist lets me buy equipment before deciding who the show is for. **Phase 1 - Pre-production:** niche and audience; name and branding; format and episode length; equipment at entry, mid and serious tiers in rupees; hosting platform. **Phase 2 - Production and post-production:** guest sourcing and outreach; recording setup including remote guests; editing workflow; show notes and transcripts; cadence and episodes banked before launch. **Phase 3 - Launch and marketing:** directory submissions; launch sequence; distribution and clips; promotion over the first ten episodes; what to measure and what to ignore. Ground the parts that depend on current facts, with sources and dates: * Current hosting platform options and pricing, and which accept Indian payment methods without friction. * Equipment actually available in India at each tier, with current rupee prices - not US prices converted. * Which podcast platforms Indian listeners actually use, as reported. * What existing podcasts already cover Indian startup history, so I can see whether the niche is occupied. Cite them. Then build the deliverable as a Google Sheet called "Podcast launch plan" with tabs for the three phases, columns Step, Owner, Depends on, Status, Notes, and a Gates tab holding the three gate questions. I will work out of the Sheet for months - that is why it goes there and not into the chat. In the chat, separately: the steps people most commonly do too early and what it costs them, and the two or three steps that genuinely cannot be skipped. Note I have not asked you to think step by step. The phases and gates are the instruction; the phrase would add nothing.